As a property owner you have rights and obligations under the rental law. This is set out in the Residential Tenancy Act 1997. This web site gives guidance on your rights and obligations.
As an owner of rental property there are relevant documents that you should keep in relation to each property. These include but are not limited to:
You can manage the property yourself without a property agent, however you are then fully responsible for all the obligations of the tenancy and for any problems that arise. If you do not live within driving distance of your property you are strongly advised to engage a property agent. It is not realistic to manage a rental property from another State or Territory.
For more information on a number of issues such as maintenance, repairs and cleaning refer to the Renting A-Z.